The actions of the series unfold in the alternative world. In the second half of the twentieth century about fifty young women give birth to babies in the same time. These children have been blessed with a gift. They had various supernatural abilities. But the most of them were destroyed by evil people who were afraid of unknown things. But seven of them have managed to survive. Sir Reginald Hargreeves has become their savior and foster father who takes care about his children. But he is not exactly a human. Moreover, somebody says he is an alien from other planet.